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cyberair 3pro cw2 original instructions
EN/06.2017/G18D © STULZ GmbH – all rights reserved
tightness
A lack of water in the circuit is replaced by air, which reduces the heat capacity of the chilled water circuit and
is detrimental to the pump. A level indication at the storage tank, if existant, can give information about chan
-
ges of the water quantity.
• check the water circuit visually for tightness.
7.4 Water circuit
7.5 Unit housing
electrical box
• check the connection terminals for tight fixation when the unit is installed and once again after an operation
time of 30 days.
Unit interior
Clean pipes simplify the search for leaks.
• clean the unit‘s inside with a vacuum cleaner.
Vibrations of pipes and circuit components can result in leaks.
• check the pipes for a tight seat.
Condensing air humidity on cold water pipes means a loss of cooling capacity.
• check the insulation of the water piping.
dANger
Mortal danger by electric hazard
When the master switch is switched on and the controller is stopped, the power contactors are
live, even if the components are not operating.
At the fan contactor, dangerous voltages occur. Do not open the unit within the first 5 minutes
after disconnection of all phases.
In units with 2 or 3 fans dangerous charges of >50µC can occur between AC line terminals and
PE after disconnection.
